![\"High](\"https:\/\/thumbs.dreamstime.com\/b\/sound-wave-icon-sound-music-digital-audio-sound-wave-icon-sound-music-digital-audio-curve-effect-science-musical-beat-163537635.jpg\"){kind=icon}
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What is the abbreviation for Hi-Res First?<\/p>\n
![\"Hi](\"https:\/\/3kie2h2bv1982onocv7b5lbz-wpengine.netdna-ssl.com\/wp-content\/uploads\/2018\/04\/vania-shows-429708-unsplash-680x350.jpg\")
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High Resolution is an abbreviation for “High Resolution Audio”. Literally translated, it is “high resolution”. It is straight.<\/p>\n
First of all, the digital music we always hear from CDs and smartphones is<\/p>\n
Sampling frequency (kHz)
\nNumber of quantization bits (bit)<\/p>\n
Sound quality is determined by these two. It is easy. I will briefly explain these two.<\/p>\n
Sampling frequency (kHz)
\nThe sample rate (sample rate) is sampling, which is a process necessary to convert analog waveforms such as speech into digital data, and it is the sample rate per unit of time. The unit is generally Hz, but sps (sample per second) can also be used.<\/p>\n
wikipedia sample rate<\/p>\n
When recording sound digitally, how finely is it recorded per second? It is a unit.<\/p>\n
Sound is the vibration of the air. You can listen to the sound by recording the vibration of the air and transmitting the recording to the speaker.<\/p>\n
Of course, the more finely chopped and recorded, the softer the sound quality will be. The more frames per second of animation, the more viscous it is.<\/p>\n
Generally, the sampling frequency of a CD is 44.1 kHz, which records the vibration of sound at 44100 times per second. This means that \u00b7 \u00b7 \u00b7<\/p>\n
40,000 times per second!<\/p>\n
Number of quantization bits (bit)
\nIn information theory and signal processing, analog data (continuous quantity), such as sampled discrete time signals, is roughly represented by discrete values, such as digital data. The number of bits used to represent a value is called the number of quantization bits, and generally increasing it to broaden the range of values \u200b\u200bthat can be taken as discrete values \u200b\u200breduces quantization error and improves quantization precision. .<\/p>\n
wikipedia quantification<\/p>\n
Earlier, I wrote that the sampling frequency (kHz) is “I am recording the vibration of the sound in increments of \u25cf\u25cf times per second!”.<\/p>\n
So what is the number of quantization bits (bit)? It is a unit of “how much information is recorded when recording?” .<\/p>\n
You are recording very finely in one second, but you are only recording if the recorded content is high or low! In that case, it doesn’t make a lot of sense.<\/p>\n
It is better to record many times, but if you record a lot of information such as “volume and pitch width” during recording, the sound reproduction rate will increase.<\/p>\n
Generally, the number of quantization bits (bit) on a CD is 16 bits. This means that each time the sound is measured, it is recorded at a level of 65,536 steps.<\/p>\n
So what about high resolution?
\nGenerally, I wrote that the sound source of the CD is 44.1 kHz \/ 16 bit, but what is the high resolution?<\/p>\n
It is said that “96 kHz \/ 24 bit” and “192 kHz \/ 24 bit” are the main sources of high resolution audio.<\/p>\n
It’s amazing, just looking at the numbers, it’s about twice that of a CD. Since a lot of information is recorded, the file size is also large compared to a normal CD, the difference is 6.5 times!<\/p>\n
Now the main topic is finally from here. There are several videos on Youtube to see if you can listen to the high resolution sound louder than this normal CD sound source with your ears.<\/p>\n","protected":false},"excerpt":{"rendered":"